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P - Block Eleme...

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  • Question 1
    4 / -1

    Which of the following halides is least stable and has doubtful existence?

  • Question 2
    4 / -1

    In laboratory, silicon can be prepared by the reaction of

  • Question 3
    4 / -1

    Ge (II) compounds are powerful reducing agnets whereas Pb (IV) compounds are strong oxidants It can be due to

  • Question 4
    4 / -1

    Quartz is a crystalline variety of

  • Question 5
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    An oxide of lead which is used in lead storage batteries, in safety matches and is a powerful oxidising agent is

  • Question 6
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    Which of the following sulphate is insoluble in water?

  • Question 7
    4 / -1

    The catenation tendency of C, Si and Ge is in the order Ge < Si < C. The bond energies (in kJ mol-1) of C – C, Si – Si and Ge – Ge bonds respectively are

  • Question 8
    4 / -1

    Which of the following is most stable ?

  • Question 9
    4 / -1

    Which among CH4, SiH4 GeH4 and SnH4 is most volatile?

  • Question 10
    4 / -1

    Which of the following reactions occurs at the cathode during the charging of a lead storage battery?

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